Take a look at the newly designed home page for some brilliant examples.
Click on any of the graphs to explore further and have a look at the equations used.
I have found this instructive for learning more about the syntax one can use.

For example one can plot individual points: (click the image for the Desmos page)

…or restrict the range:

I thought I would create a slideshow for my students showing the different types of graph which they should be familiar with at GCSE (taken at age 15-16 in the UK).
Each slide links to a Desmos page where they can use the sliders to explore families of curves.

Happy Easter 2017! (Click the link and WolframAlpha will tell you more than you wanted to know about Easter Sunday!)

Since it’s a holiday we should be relaxing! A conversation on Twitter(click the link for an updated post on Twitter) this morning reminded me of the excellent Set Game – a daily puzzle which is provided by the new York Times for age 6 – adult.